101432D • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • November 22, 2004
1
DATA SHEET • SKY42054
LNA_INA
L_GNDA
24
23
22
21
20
GND
M_INNA
19
18
L_OUTA
M_INPA
MGNDA
1
IFNA
LO_1
2
17
IFPA
ATTN
3
16
LO_GND
LO_SEL
4
15
VDD
LO_2
5
14
IFPB
VSS
6
7
8
9
10
11
12
13
IFNB
LNA_INB
L_GNDB
MGNDB
M_INPB
M_INNB
L_OUTB
C1250
Figure 2. SKY42054 Pinout – 24-Pin PQFP Package
(Top View)
Table 1. SKY42054 Signal Descriptions
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
Name
GND
LO_1
ATTN
LO_SEL
LO_2
VSS
LNA_INB
L_GNDB
L_OUTB
MGNDB
M_INPB
M_INNB
Ground
Local oscillator 1 input for channels A and B
Channels A and B attenuator control
LO_1/LO_2 select control
Local oscillator 2 input for channels A and B
Negative supply voltage
Channel B LNA input
Channel B LNA ground
Channel B LNA output
Channel B mixer ground
Channel B positive differential mixer input
Channel B negative differential mixer input
Description
Pin #
13
14
15
16
17
18
19
20
21
22
23
24
Name
IFNB
IFPB
VDD
LO_GND
IFPA
IFNA
M_INNA
M_INPA
MGNDA
L_OUTA
L_GNDA
LNA_INA
Description
Channel B negative differential mixer IF output
Channel B positive differential mixer IF output
Positive supply voltage
Local oscillator ground
Channel A positive differential mixer IF output
Channel A negative differential mixer IF output
Channel A negative differential mixer input
Channel A positive differential mixer input
Channel A mixer ground
Channel A LNA output
Channel A LNA ground
Channel A LNA input
Technical Description
The SKY42054 consists of two identical channels (A and B),
specifically designed for the purpose of diversity in base station
applications.
Each channel consists of a single-ended LNA and a double-
balanced differential mixer. The LNAs share a common CMOS-
compatible attenuator control switch, which bypasses the LNA,
providing 20 dB of attenuation.
Each channel shares two independent LO signals (LO1 and LO2)
selected using a common CMOS-compatible control signal. With
this ability, the SKY42054 can be used in frequency hopping
applications.
The LNAs and mixers are independently biased. This allows
design flexibility with power management functions in base
station receivers.
Package and Handling Information
Since the device package is sensitive to moisture absorption, it is
baked and vacuum packed before shipping. Instructions on the
November 22, 2004 • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • 101432D
DATA SHEET • SKY42054
shipping container label regarding exposure to moisture after the
container seal is broken must be followed. Otherwise, problems
related to moisture absorption may occur when the part is
subjected to high temperature during solder assembly.
If the part is attached in a reflow oven, the temperature ramp rate
should not exceed 10
°C
per second. Maximum temperature
should not exceed 225
°C
and the time spent at a temperature
that exceeds 210
°C
should be limited to less than 10 seconds. If
the part is manually attached, precaution should be taken to
ensure that the part is not subjected to a temperature that
exceeds 300
°C
for more than 10 seconds.
Care must be taken when attaching this product, whether it is
done manually or in a production solder reflow environment.
Production quantities of this product are shipped in a standard
tape and reel format. For packaging details, refer to the Skyworks
Application Note,
Tape and Reel,
document number 101568.
Electrical and Mechanical Specifications
The absolute maximum ratings of the SKY42054 are provided in
Table 2 and the recommended operating conditions provided in
Table 3. Electrical characteristics of the SKY42054 are provided in
Table 4. Table 5 provides additional electrical specifications for
full channel performance.
Typical performance characteristics of the SKY42054 are
illustrated in Figures 3 through 9. Figure 14 provides the package
dimensions for the 24-pin PQFP, and Figure 15 provides the tape
and reel dimensions.
Electrostatic Discharge (ESD) Sensitivity
The SKY42054 is a static-sensitive electronic device. Do not
operate or store near strong electrostatic fields. Take proper ESD
precautions.
Table 2. SKY42054 Absolute Maximum Ratings
(T
A
= +25
°C,
unless otherwise noted)
Parameter
Positive DC power supply
Negative DC power supply
Power dissipation
Input power
Thermal resistance
Operating case temperature
Storage case temperature
Note:
Symbol
VDD
VSS
P
D
P
IN
R
TH
T
OPR
T
STG
Min
Typical
Max
+5.5
–6.0
2.25
+15
Units
V
V
W
dBm
°C/W
+25
–40
–40
+85
+125
°C
°C
Exposure to maximum rating conditions for extended periods may reduce device reliability. There is no damage to device with only one parameter set at the limit and all other
101432D • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • November 22, 2004
3
DATA SHEET • SKY42054
Table 4. SKY42054 Electrical Characteristics
(+25
°C,
Voltage Supply = ±5 V, LO = 0 dBm, RF Frequency = 1900 MHz, IF Frequency = 135 MHz, Mixer Bias = 55 mA)
Parameter
Low Noise Amplifier
Gain
Noise Figure
Input IP3
–1 dB compression point
RF
RF input frequency
RF input (Note 1)
RF output (Note 1)
Mixer (Note 2)
Conversion gain
Single side band Noise Figure
Input IP3
RF to IF leakage
LO to IF leakage
–1 dB compression point
1/2 IF product suppression
Local Oscillator
LO input frequency
LO input (Note 1)
LO level input
Intermediate Frequency
IF output frequency
IF output (Note 1)
Note 2:
Include RF balun and IF transformer losses.
Test Condition
Min
Typical
Max
Units
13.5
14.4
2.3
2.7
dB
dB
dBm
dBm
14.6
2
16.2
5.5
1700
1.5:1
1.5:1
2200
2.0:1
2.0:1
MHz
VSWR
VSWR
–1.5
+1.5
10.5
13.0
dB
dB
dBm
dBm
dBm
dBm
–60
dBc
22
25
–35
–40
+11
+15
–70
1700
1.5:1
–5
0
2200
2.0:1
+5
MHz
VSWR
dBm
50
1.5:1
250
2.0:1
MHz
VSWR
Note 1:
In a 50
Ω
system obtained with external matching components on input/output ports. See Figure 10, and Tables 6 and 7 for matching network configuration and element values.
November 22, 2004 • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • 101432D
DATA SHEET • SKY42054
Table 5. Full Channel Performance
(+ 25
°C,
Voltage Supply = ±5 V, LO = 0 dBm, RF Frequency = 1900 MHz, IF Frequency = 135 MHz, Image Reject Filter Loss = 1.5 dB)
Parameter
RF input (Note 1)
Noise Figure (Note 2)
Gain (Note 3)
Input IP3 (Note 4)
1 dB compression point (Note 5)
1/2 IF product suppression
Channel A to B isolation
LO leakage at RF input
LO1 to LO2 isolation
Supply current @ +5.0 V, both channels
Supply current @ –5.0 V, both channels
Note 2:
Calculated using the following equation:
Test Condition
Min
Typical
1.5:1
3.3
Max
Units
VSWR
4.9
dB
dB
dBm
dBm
11.6
7.5
–3.6
14.4
10.7
+2.1
–65
–55
dBc
dB
35
40
–35
–30
dBm
dB
30
35
340
10
360
15
mA
mA
Note 1:
In a 50
Ω
system obtained with external matching network on LNA and mixer input ports. See Figure 10, and Tables 6 and 7 for network elements and frequency ranges.
101432D • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • November 22, 2004
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